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Definición de Proyecto educativo

TABLA 21. PROCESO DE EVALUACIÓN DE LOS PIP

2. PARADIGMAS Y MODELOS DE LOS PIP

2.1. EL PARADIGMA POSITIVISTA

2.1.2. MODELO ADMINISTRACIÓN EDUCATIVA

ASDs have a strong genetic component, but they have a complex pattern of inheri- tance and are highly heterogeneous. GWASs have not defi ned strong gene candi- dates, leading to the conclusion that multiple rare variants may be involved. Genetic network and integrative genetic approaches are leading to deeper insights into the underlying genetic problems. A number of single-gene disorders, such as fragile X, have been associated with ASDs and may lead the way for the development of new drug therapeutic approaches. The recent discovery of the signifi cant role that CNVs play in ASD and other neurodevelopmental disorders also may help us understand and explain the underlying common genetic networks that are involved. Parental age effects in ASD suggest genetic mechanisms. Prenatal exposure to hurricanes has been associated with autism, pointing to the potential role of environmental stressors. Finally, the exciting role that the ncRNAs may play in regulating brain development and functioning are just beginning to help explain the complex genet- ics of autism.

REFERENCES

Abrahams, B.S. and D.H. Geschwind (2008). Advances in autism genetics: On the threshold of a new neurobiology. Nat. Rev. Genet. 9:341–355.

American Psychiatric Association (1994). Diagnostic and Statistical Manual of Mental Disorders, 4th ed. Washington, DC: American Psychiatric Association.

Armengol, L., M. Caceres, A. Brunet, and X. Estivill (2007). Enrichment and variability of PIWI-interacting RNAs (piRNAs) in segmental duplications and copy number variants (CNVs) suggest a functional role in the integrity of the genome. Abstract #153 presented at the Annual Meeting of the American Society of Human Genetics, San Diego, CA. Baron-Cohen, S. (2002). The extreme male brain theory of autism. Trends Cogn. Sci.

6:248–254.

Baron-Cohen, S., R.C. Knickmeyer, and M.K. Belmonte (2005). Sex differences in the brain: Implications for explaining autism. Science 310:819–823.

Belmonte, M.K. and T. Bourgeron (2006). Fragile X syndrome and autism at the intersection of genetic and neural networks. Nat. Neurosci. 9:1221–1225.

Berry-Kravis, E.M., D. Hessl, S. Coffey, C. Hervey, A. Schneider, J. Yuhas, J. Hutchison, M. Snape, M. Tranfaglia, D.V. Nguyen, and R. Hagerman (2009). A pilot open-label single-dose trial of fenobam in adults with fragile X syndrome. J. Med. Genet. 46:266–271.

Betel, D., R. Sheridan, D.S. Marks, and C. Sander (2007). Computational analysis of mouse piRNA sequence and biogenesis. PLoS Comput. Biol. 3:e222.

Bilousova, T.V., L. Dansie, M. Ngo, J. Aye, J.R. Charles, D.W. Ethell, and I.M. Ethell (2009). Minocycline promotes dendritic spine maturation and improves behavioural performance in the fragile X mouse model. J. Med. Genet. 46:94–102.

Bohm, H.V. and M.G. Stewart (2009). Brief report: On the concordance percentages for autistic spectrum disorder of twins. J. Autism Dev. Disord. 39:806–808.

Brown, W.T., E.C. Jenkins, E. Friedman, J. Brooks, K. Wisniewski, S. Raguthu, and J. French (1982). Autism is associated with the fragile-X syndrome. J. Autism Dev. Disord. 12:303–308.

Bruder, C.E., A. Piotrowski, A.A. Gijsbers, R. Andersson, S. Erickson, T.D. de Ståhl, U. Menzel, J. Sandgren, D. von Tell, A. Poplawski, M. Crowley, C. Crasto, E.C. Partridge, H. Tiwari, D.B. Allison, J. Komorowski, G.J. van Ommen, D.I. Boomsma, N.L. Pedersen, J.T. den Dunnen, K. Wirdefeldt, and J.P. Dumanski (2008). Phenotypically concordant and discordant monozygotic twins display different DNA copy-number-variation pro- fi les. Am. J. Hum. Genet. 82:763–771.

Butcher, L.M., O.S. Davis, I.W. Craig, and R. Plomin (2008). Genome-wide quantitative trait locus association scan of general cognitive ability using pooled DNA and 500K single nucleotide polymorphism microarrays. Genes Brain Behav. 7:435–446.

Centers for Disease Control and Prevention (2007). Prevalence of autism spectrum disorders— Autism and developmental disabilities monitoring network, 14 sites, United States, 2002. MMWR Surveill. Summ. 56:1–40.

Chakrabarti, S. and E. Fombonne (2001). Pervasive developmental disorders in preschool chil- dren. JAMA 285:3093–3099.

Chakrabarti, S. and E. Fombonne (2005). Pervasive developmental disorders in preschool chil- dren: Confi rmation of high prevalence. Am. J. Psychiatry 162:1133–1141.

Cheung, V.G., A. Bruzel, J.T. Burdick, M. Morley, J.L. Devlin, and R.S. Spielman (2008). Monozygotic twins reveal germline contribution to allelic expression differences. Am. J. Hum. Genet. 82:1357–1360.

Christian, S.L., C.W. Brune, J. Sudi, R.A. Kumar, S. Liu, S. Karamohamed, J.A. Badner, S. Matsui, J. Conroy, D. McQuaid, J. Gergel, E. Hatchwell, T.C. Gilliam, E.S. Gershon, N.J. Nowak, W.B. Dobyns, and E.H. Cook Jr. (2008). Novel submicroscopic chromosomal abnormalities detected in autism spectrum disorder. Biol. Psychiatry 63:1111–1117. Cook, E.H. Jr. and S.W. Scherer (2008). Copy-number variations associated with neuropsychi-

atric conditions. Nature 455:919–923.

Croen, L.A., D.V. Najjar, B. Fireman, and J.K. Grether (2007). Maternal and paternal age and risk of autism spectrum disorders. Arch. Pediatr. Adolesc. Med. 161:334–340.

Cruess, D.G., M.H. Antoni, M. Kumar, B. McGregor, S. Alferi, A.M. Boyers, C.S. Carver, and K. Kilbourn (2000). Effects of stress management on testosterone levels in women with early-stage breast cancer. Int. J. Behav. Med. 8:194–207.

Durkin, M.S., M.J. Maenner, C.J. Newschaffer, L.C. Lee, C.M. Cunniff, J.K. Daniels, R.S. Kirby, L. Leavitt, L. Miller, W. Zahorodny, and L.A. Schieve (2008). Advanced parental age and the risk of autism spectrum disorder. Am. J. Epidemiol. 168:1268–1276.

Emilsson, V., G. Thorleifsson, B. Zhang, A.S. Leonardson, F. Zink, J. Zhu, S. Carlson, A. Helgason, G.B. Walters, S. Gunnarsdottir, M. Mouy, V. Steinthorsdottir, G.H. Eiriksdottir, G. Bjornsdottir, I. Reynisdottir, D. Gudbjartsson, D. Helgadottir, A. Jonasdottir, A. Jonasdottir, U. Styrkarsdottir, S. Gretarsdottir, K.P. Magnusson, H. Stefansson, R. Fossdal, K. Kristjansson, H.G. Gislason, T. Stefansson, B.G. Leifsson, U. Thorsteinsdottir, J.R. Lamb, J.R. Gulcher, M.L. Reitman, A. Kong, E.E. Schadt, and

K. Stefansson (2008). Genetics of gene expression and its effect on disease. Nature 452:423–428.

Feldman, I., A. Rzhetsky, and D. Vitkup (2008). Network properties of genes harboring inher- ited disease mutations. Proc. Natl. Acad. Sci. USA 105:4323–4328.

Folstein, S.E. and B. Rosen-Sheidley (2001). Genetics of autism: Complex aetiology for a heterogeneous disorder. Nat. Rev. Genet. 2:943–955.

Fombonne, E., R. Zakarian, A. Bennett, L. Meng, and D. McLean-Heywood (2006). Pervasive developmental disorders in Montreal, Quebec, Canada: Prevalence and links with immu- nizations. Pediatrics 118:e139–e150.

Freitag, C.M. (2007). The genetics of autistic disorders and its clinical relevance: A review of the literature. Mol. Psychiatry 12:2–22.

Ghaziuddin, M. (2005). A family history study of Asperger syndrome. J. Autism Dev. Disord. 38:11735:177–182.

Ghildiyal, M. and P.D. Zamore (2009). Small silencing RNAs: An expanding universe. Nat. Rev. Genet. 10:94–108.

Gillberg, I.C. and C. Gillberg (1989). Asperger syndrome—Some epidemiological consider- ations: A research note. J. Child Psychol. Psychiatry 30:631–638.

Goh, K.I., M.E. Cusick, D. Valle, B. Childs, M. Vidal, and A.L. Barabási (2007). The human disease network. Proc. Natl. Acad. Sci. USA 104:8685–8690.

Guttman, M., I. Amit, M. Garber, C. French, M.F. Lin, D. Feldser, M. Huarte, O. Zuk, B.W. Carey, J.P. Cassady, M.N. Cabili, R. Jaenisch, T.S. Mikkelsen, T. Jacks, N. Hacohen, B.E. Bernstein, M. Kellis, A. Regev, J.L. Rinn, and E.S. Lander (2009). Chromatin signature reveals over a thousand highly conserved large non-coding RNAs in mammals. Nature 458:223–227.

Hagerman, R.J., E. Berry-Kravis, W.E. Kaufmann, M.Y. Ono, N. Tartaglia, A. Lachiewicz, R. Kronk, C. Delahunty, D. Hessl, J. Visootsak, J. Picker, L. Gane, and M. Tranfaglia (2009). Advances in the treatment of fragile X syndrome. Pediatrics 123:378–390. Hansen, R.L., S. Ozonoff, P. Krakowiak, K. Angkustsiri, C. Jones, L.J. Deprey, D.N. Le,

L.A. Croen, and I. Hertz-Picciotto (2008). Regression in autism: Prevalence and associ- ated factors in the CHARGE Study. Ambul. Pediatr. 8:25–31.

Harris, S.W., D. Hessl, B. Goodlin-Jones, J. Ferranti, S. Bacalman, I. Barbato, F. Tassone, P.J. Hagerman, H. Herman, and R.J. Hagerman (2008). Autism profi les of males with fragile X syndrome. Am. J. Ment. Retard. 113:427–438.

Itsara, A., G.M. Cooper, C. Baker, S. Girirajan, J. Li, D. Absher, R.M. Krauss, R.M. Myers, P.M. Ridker, D.I. Chasman, H. Mefford, P. Ying, D.A. Nickerson, and E.E. Eichler (2009). Population analysis of large copy number variants and hotspots of human genetic disease. Am. J. Hum. Genet. 84:148–161.

Jacquemont, M.L., D. Sanlaville, R. Redon, O. Raoul, V. Cormier-Daire, S. Lyonnet, J. Amiel, M. Le Merrer, D. Heron, M.C. de Blois, M. Prieur, M. Vekemans, N.P. Carter, A. Munnich, L. Colleaux, and A. Philippe (2006). Array-based comparative genomic hybridisation identifi es high frequency of cryptic chromosomal rearrangements in patients with syn- dromic autism spectrum disorders. J. Med. Genet. 43:843–849.

Kaminsky, K.A., T. Tang, S.C. Wang, C. Ptak, G.H. Oh, A.H. Wong, L.A. Feldcamp, C. Virtanen, J. Halfvarson, C. Tysk, A.F. McRae, P.M. Visscher, G.W. Montgomery, I.I. Gottesman, N.G. Martin, and A. Petronis (2009). DNA methylation profi les in monozygotic and dizygotic twins. Nat. Genet. 41:240–245.

Kinney, D.K., A.M. Miller, D.J. Crowley, E. Huang, and E. Gerber (2008a). Autism prevalence following prenatal exposure to hurricanes and tropical storms in Louisiana. J. Autism Dev. Disord. 38:481–488.

Kinney, D.K., K.M. Munir, D.J. Crowley, and A.M. Miller (2008b). Prenatal stress and risk for autism. Neurosci. Biobehav. Rev. 32:1519–1532.

Knickmeyer, R.C. and S. Baron-Cohen (2006). Fetal testosterone and sex differences in typi- cal social development and in autism. J. Child. Neurol. 21:825–845.

Kopra, K., L. von Wendt, T. Nieminen-von Wendt, and E.J. Paavonen (2008). Comparison of diagnostic methods for Asperger syndrome. J. Autism Dev. Disord. 38:1567–1573. Liu, X.Q., A.D. Paterson, and P. Szatmari; Autism Genome Project Consortium (2008).

Genome-wide linkage analyses of quantitative and categorical autism subphenotypes. Biol. Psychiatry 64:561–570.

Lossifov, I., T. Zheng, M. Baron, T.C. Gilliam, and A. Rzhetsky (2008). Genetic-linkage map- ping of complex hereditary disorders to a whole-genome molecular-interaction network. Genome Res. 18:1150–1162.

Lowenthal, R., C.S. Paula, J.S. Schwartzman, D. Brunoni, and M.T. Mercadante (2007). Prevalence of pervasive developmental disorder in Down’s syndrome. J. Autism Dev. Disord. 37:1394–1395.

Maher, B. (2008). The case of the missing heritability. Nature 456:18–21.

Marshall, C.R., A. Noor, J.B. Vincent, A.C. Lionel, L. Feuk, J. Skaug, M. Shago, R. Moessner, D. Pinto, Y. Ren, B. Thiruvahindrapduram, A. Fiebig, S. Schreiber, J. Friedman, C.E. Ketelaars, Y.J. Vos, C. Ficicioglu, S. Kirkpatrick, R. Nicolson, L. Sloman, A. Summers, C. A. Gibbons, A. Teebi, D. Chitayat, R. Weksberg, A. Thompson, C. Vardy, V. Crosbie, S. Luscombe, R. Baatjes, L. Zwaigenbaum, W. Roberts, B. Fernandez, P. Szatmari, and S.W. Scherer (2008). Structural variation of chromosomes in autism spectrum disorder. Am. J. Hum. Genet. 82:477–488.

Mattila, M.-L., M. Kielinen, and K. Jussila (2007). An epidemiological and diagnostic study of Asperger syndrome according to four sets of diagnostic criteria. J. Am. Acad. Child Adol. Psych. 46:636–646.

Mercer, T.R., M.E. Dinger, J. Mariani, K.S. Kosik, M.F. Mehler, and J.S. Mattick (2008). Noncoding RNAs in long-term memory formation. Neuroscientist 14:434–445. Nelson, B. (2008). A disruptive personality, disrupted. Nature 456:26–28.

Niu, S., O. Yabut, and G. D’Arcangelo (2008). The Reelin signaling pathway promotes den- dritic spine development in hippocampal neurons. J. Neurosci. 28:10339–10348. Pheasant, M. and J.S. Mattick (2007). Raising the estimate of functional human sequences.

Genome Res. 17:1245–1253.

Pollard, K.S., S.R. Salama, N. Lambert, M.A. Lambot, S. Coppens, J.S. Pedersen, S. Katzman, B. King, C. Onodera, A. Siepel, A.D. Kern, C. Dehay, H. Igel, Ares, Jr., M.P. Vanderhaeghen, and D. Haussler (2006). An RNA gene expressed during cortical development evolved rapidly in humans. Nature 443:167–172.

Psychiatric GWAS Consortium Steering Committee (2009). A framework for interpreting genome-wide association studies of psychiatric disorders. Mol. Psychiatry 14:10–17. Schadt, E.E., J. Lamb, X. Yang, J. Zhu, S. Edwards, D. Guhathakurta, S.K. Sieberts, S. Monks,

M. Reitman, C. Zhang, P.Y. Lum, A. Leonardson, R. Thieringer, J.M. Metzger, L. Yang, J. Castle, H. Zhu, S.F. Kash, T.A. Drake, A. Sachs, and A.J. Lusis (2005). An integrative genomics approach to infer causal associations between gene expression and disease. Nat. Genet. 37:710–717.

Schadt, E.E., C. Molony, E. Chudin, K. Hao, X. Yang, P.Y. Lum, A. Kasarskis, B. Zhang, S. Wang, C Suver, J. Zhu, J. Millstein, S. Sieberts, J. Lamb, D. GuhaThakurta, J. Derry, J.D. Storey, I. Avila-Campillo, M.J. Kruger, J.M. Johnson, C.A. Rohl, A. van Nas, M. Mehrabian, T.A. Drake, A.J. Lusis, R.C. Smith, F.P. Guengerich, S.C. Strom, E. Schuetz, T.H. Rushmore, and R. Ulrich (2008). Mapping the genetic architecture of gene expression in human liver. PLoS Biol. 6:e107.

Schratt, G.M., F. Tuebing, E.A. Nigh, C.G. Kane, M.E. Sabatini, M. Kiebler, and M.E. Greenberg (2006). A brain-specifi c microRNA regulates dendritic spine development. Nature 439:283–289.

Sebat, J., B. Lakshmi, D. Malhotra, J. Troge, C. Lese-Martin, T. Walsh, B. Yamrom, S. Yoon, A. Krasnitz, J. Kendall, A. Leotta, D. Pai, R. Zhang, Y.H. Lee, J. Hicks, S.J. Spence, A.T. Lee, K. Puura, T. Lehtimäki, D. Ledbetter, P.K. Gregersen, J. Bregman, J.S. Sutcliffe, V. Jobanputra, W. Chung, D. Warburton, M.C. King, D. Skuse, D.H. Geschwind, T.C. Gilliam, K. Ye, and M. Wigler (2007). Strong association of de novo copy number mutations with autism. Science 316:445–449.

Szatmari, P., R. Bremner, and J. Nagy (1989). Asperger’s syndrome: A review of clinical fea- tures. Can. J. Psychiatry 34:554–560.

Szatmari, P., et al. The Autism Genome Project Consortium (2007). Mapping autism risk loci using genetic linkage and chromosomal rearrangements. Nat. Genet. 39:319–328. Walsh, T., J.M. McClellan, S.E. McCarthy, A.M. Addington, S.B. Pierce, G.M. Cooper,

A.S. Nord, M. Kusenda, D. Malhotra, A. Bhandari, S.M. Stray, C.F. Rippey, P. Roccanova, V. Makarov, B. Lakshmi, R.L. Findling, L. Sikich, T. Stromberg, B. Merriman, N. Gogtay, P. Butler, K. Eckstrand, L. Noory, P. Gochman, R. Long, Z. Chen, S. Davis, C. Baker, E.E. Eichler, P.S. Meltzer, S.F. Nelson, A.B. Singleton, M.K. Lee, J.L. Rapoport, M.C. King, and J. Sebat (2008). Rare structural variants disrupt multiple genes in neu- rodevelopmental pathways in schizophrenia. Science 320:539–543.

Weiss, L.A., Y. Shen, J.M. Korn, D.E. Arking, D.T. Miller, R. Fossdal, E. Saemundsen, H. Stefansson, M.A. Ferreira, T. Green, O.S. Platt, D.M. Ruderfer, C.A. Walsh, D. Altshuler, A. Chakravarti, R.E. Tanzi, K. Stefansson, S.L. Santangelo, J.F. Gusella, P. Sklar, B.L. Wu, and M.J. Daly; Autism Consortium (2008). Association between microdele- tion and microduplication at 16p11.2 and autism. N. Engl. J. Med. 358:667–675. Williams, E., K. Thomas, H. Sidebotham, and A. Emond (2008). Prevalence and character-

istics of autistic spectrum disorders in the ALSPAC cohort. Dev. Med. Child Neurol. 50:672–677.

Witwer, A.N. and L.J. Lecavalier (2008). Examining the validity of autism spectrum disorder subtypes. J. Autism Dev. Disord. 38:1611–1624.

World Health Organization (1992). The ICD-10 Classifi cation of Mental and Behavioral Disorders: Clinical Descriptions and Diagnostic Guidelines. Geneva, Switzerland: WHO.

Xu, B., J.L. Roos, S. Levy, E.J. van Rensburg, J.A. Gogos, and M. Karayiorgou (2008). Strong association of de novo copy number mutations with sporadic schizophrenia. Nat. Genet. 40:880–885.

Zhao, X., A. Leotta, V. Kustanovich, C. Lajonchere, D.H. Geschwind, K. Law, P. Law, S. Qiu, C. Lord, J. Sebat, K. Ye, and M. Wigler (2007). A unifi ed genetic theory for sporadic and inherited autism. Proc. Natl. Acad. Sci. USA 104:12831–12836.

Zhu, J., B. Zhang, and E.E. Schadt (2008). A systems biology approach to drug discovery. Adv. Genet. 60:603–635.

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Phenotypic

Expression of Autism,